Rule gvmkeilztzktgaoj

[id: gvmkeilztzktgaoj] i(what is the date)
  && $day = eval(nth(localDayOfMonth()))
  => o(It is the $day)

Loaded as

[id: gvmkeilztzktgaoj] input(what is the date) && $day = eval(nth(localDayOfMonth())) => output(It is the $day)